1121759 has 4 divisors (see below), whose sum is σ = 1125480. Its totient is φ = 1118040.

The previous prime is 1121737. The next prime is 1121819. The reversal of 1121759 is 9571211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9571211 = 13 ⋅736247.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121759 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1124759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364 + ... + 2025.

It is an arithmetic number, because the mean of its divisors is an integer number (281370).

2^1121759 is an apocalyptic number.

1121759 is a deficient number, since it is larger than the sum of its proper divisors (3721).

1121759 is an equidigital number, since it uses as much as digits as its factorization.

1121759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3720.

The product of its digits is 630, while the sum is 26.

The square root of 1121759 is about 1059.1312477687. The cubic root of 1121759 is about 103.9042202498.

The spelling of 1121759 in words is "one million, one hundred twenty-one thousand, seven hundred fifty-nine".